body{
    width: 100%;
    min-width: 320px;
    max-width: 640px;
    margin: 0 auto;
    font-size: 14px;
    font-family: Arial, Helvetica, sans-serif;
    color: #666;
    line-height: 1.5;
    /* height: 2000px;
    background-color: #ccc; */
}
* {
    -webkit-tap-highlight-color: transparent;
}
input {
    -webkit-appearance: none;
}
a{
    color: #666;
    text-decoration: none;
}
ul{
    margin: 0;
    padding: 0;
    list-style: none;
}
img{
    vertical-align: middle;
    /* border-style: none; */
    /* height: 100%; */
}
div{
    box-sizing: border-box;
}
.app{
    height: 45px;
}
.app ul li{
    height: 45px;
    float: left;
    line-height: 45px;
    background-color: #333;
    text-align: center;
    color: #fff;
}
.app ul li:nth-child(1){
    width: 8%;
}
.app ul li:nth-child(1) img{
    width: 10px;
}
.app ul li:nth-child(2){
    width: 10%;
}
.app ul li:nth-child(2) img{
    width: 30px;
    vertical-align: middle;
}
.app ul li:nth-child(3){
    width: 57%;
}.app ul li:nth-child(4){
    width: 25%;
    background-color: #F63515;
}
.search-wrap{
    position: fixed;
    overflow: hidden;
    width: 100%;
    height: 44px;
    min-width: 320px;
    max-width: 640px;
}
.search-btn{
    position: absolute;
    top: 0;
    left: 0;
    /* background-color: pink; */
    width: 40px;
    height: 44px;
}
.search-btn::before{
    content: "";
    display: block;
    width: 20px;
    height: 18px;
    background: url('../img/s-btn.png') no-repeat;
    background-size: 20px 18px;
    margin: 14px 0 0 15px;
}
.search-login{
    position: absolute;
    top: 0;
    right: 0;
    /* background-color: purple; */
    width: 40px;
    height: 44px;
    color: #fff;
    line-height: 44px;
}
.search {
    position: relative;
    height: 30px;
    background-color: #fff;
    margin: 0 50px;
    border-radius: 15px;
    margin-top: 7px;
}
.jd-icon{
    width: 20px;
    height: 15px;
    position: absolute;
    top: 8px;
    left: 13px;
    /* background-color: pink; */
    background: url(../img/logo.jfif) no-repeat;
    background-size: 20px 15px;

}
.jd-icon::after{
    content: "";
    position: absolute;
    right: -8px;
    top: 0;
    display: block;
    width: 1px;
    height: 15px;
    background-color: #ccc;
}
.sou{
    width: 18px;
    height: 15px;
    top: 8px;
    left: 50px;
    background-color: pink;
    background: url(../img/search.png) no-repeat;
    background-size: 200px auto;

}
.slider img{
    width: 100%;
}

/* 3 */
.brand {
    overflow: hidden;
    border-radius: 10px 10px 0 0;
}
.brand div{
    width: 33.3%;
    float: left;
}
.brand div img{
width: 100%;
}
nav{
    padding-top: 5px;
}
nav a{
    float: left;
    width: 20%;
    text-align: center;
}
nav a img {
    width: 40px;
    margin: 10px 0;
}
nav a span {
    display: block;
}
/* 5 */
.news {
    margin-top: 20px;
}
.news img{
    width: 100%;
}
.news a{
    float: left;
    box-sizing: border-box;
}
.news a:nth-child(1){
    width: 33%;
}
.news a:nth-child(2){
    width: 33%;
    border-left: 1px solid #ccc;
}
.news a:nth-child(3){
    width: 33%;
    border-left: 1px solid #ccc;
}